Battery Diagnostics Pro

Battery Diagnostics Pro is an on-device battery and power analysis tool for Android. It reads your phone's own battery and power information and presents around 200 metrics in a readable form — no account, no sign-up, and no internet connection.

WHAT IT SHOWS
• Battery health and estimated maximum capacity vs. factory capacity
• Charge level, voltage, current, temperature, and cycle count
• Charging state, charger/fuel-gauge IC data, and thermal zones
• Power profile and per-component power estimates (screen, CPU, radio, Wi-Fi, sensors)
• On Samsung devices: 30+ extra hardware diagnostics (fuel gauge ASOC, SIOP throttle, wireless charging state, fast-charge limits, manufacture date, and more)
• Optional: top apps by foreground time (requires Usage Access, granted by you in Settings)

PRIVACY
Everything runs on your device. The app makes no network requests, has no backend, uses no third-party SDKs, and collects no personal data. Nothing leaves your phone.

WHO IT'S FOR
Power users and repair technicians who want visibility into their own device's battery condition in one place.

Some advanced metrics depend on device/OEM support and are shown only when available.